Centrifugal extractor



A. E. W. JAHN.

CENTRIFUGAL EXTRACTDR.

APPLICATION FILED AUG-4| $914.

1,193,697. Patented Aug. 8, 1916.

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A. E. W. JAHN.

CENTRIFUGAL EXTRACTOR.

APPLICATION EILED AUG-4| 1914.

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Patented Aug. 8, 1916.

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CENTRIFUGAI. EXTRACTOR.

APPLICATION FILED AUG-4,1914.

Patented Aug. 8, 1916.

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AUGUST E. W. JAHN, OF NEW YORK, N. Y., ASSIGNOR TO TROY LAUNDRYMACHINERY COMPANY, LTD., A CORPORATION OF NEW YORK.

CENTRIFUGAL EXTRACTOR.

Specification of Letters Patent.

Patented Aug. 8, 1916.

To all whom it may concern:

Be it known that I, AUGUST E. W. JAHN, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in CentrifugalExtractors, of which the following is a specification.

My invention relates to improvements in centrifugal extractors and inarticular to a guide for the rotary basket 0 such an extractor.

In centrifugal extractors such as are used in laundries it is desirableand the common practice to have the rotary perforated basket in whichthe clothes are placed mounted upon a shaft or spindle which revolves ata very high rate of speed. The most usual and practicable constructionrequires that the basket be mounted at or adjacent to the end of thespindle and a. considerable distance from the bearing in which thespindle re volves, but this arrangement has resulted in violentoscillations and vibrations of the swiftly rotating basket relatively toits normal axis of rotation especially when the basket is carelessly orimproperly loaded, thereby imposing great strains upon the spindle andits bearings and causing great danger of injury to other parts of themachine.

It is therefore the principal object of my invention to provide alateral support or guide for the rotary basket of a centrifugalextractor.

A further object is to provide a uide or bearing for the extractor whichwill ave the least possible tendency to reduce the speed of the rotatingbasket.

Still another object is to provide a guide or bearing for the basketwhich will possess suflicient resiliency to permit limited vibrations ofthe basket, while at the same time dampening such vibrations andpreventing such violent oscillations as are liable to cause injury tothe different parts of the machine.

These and other objects will be more particularly set forth and madeapparent in the following specification, taken in connection with theaccompanying drawings, in which I have illustrated several differentforms of my invention.

Referring to the drawings-Figure 1 shows a perspective view of acentrifugal extractor. Fig. 2 shows a. vertical central section througha portion of the extractor shown in Fig. 1 showing the application of myimproved hearing or guide attachment. Fig. 3 1s a horizontal sectionalView taken on the irregular line 3, 3 of Fig. 2. Fig. 4 1s a v1ewsimilar to that of Fig. 2, showing a different form of my invention.Fig. 5 1s a sectional view taken on the line 5, 5 of F1g. 4. Fig. 6 is aperspective view of a port on of the upper supporting ring shown inFigs. 4 and 5. Fig. 7 is a perspective view of a portion of the lowersupporting ring shown in Figs. 4 and 5. Fig. 8 is a vertical sectionalview similar to that of Fig. 2, but showing a third form of myinvention. Fig. 9 shows a sectionl view taken on the line 9, 9 of Fig.8. Fig. 10 shows a vertical section through the upper retaining ring ofFig. 8 showing a ball bearing in elevation. Fig. 11 is a perspectiveview showing a portion of the upper retaining ring of the form shown inFigs.- 8 and 9. Fig. 12 shows a vertical sectional view similar to thatof Fig. 2, illustrating a fourth form of my invention. Fig. 13 shows asectional view taken on the line 13 of Fig. 12. Fi 14 shows avertical-section through one o the rollers illustrated in Figs. 12 and13; and Fig. 15 shows a perspective view of a bracket member in whichthe rollers shown in Figs. 12, 13 and 14 are mounted.

Like numerals refer to like parts and elements throughout the drawings.

Referring to Fig. 1, the frame of the centrifugal extractor is shown ascomprising a shell 10, a standard 11, and a bearing base 12, the latterpart being adapted to be secured to a floor or supporting base by anysuitable means. Mounted in a suitable step bearing in the base 12 is arotary spindle 13 which extends upwardly into the shell 10 where it issecured to a basket flange 14 upon which the rotary perforated basket 15is concentrically mounted, as shown, for instance, in Fig. 2. Adjacentits lower end the spindle 13 carries a spindle pulley 16, which isadapted to be connected by a belt to any suitable source of power. Inthe form of centrifugal extractor illustrated in the drawings, asupporting bracket 17 extends upwardly at one side of the machine andcarries a countershaft havin the drive wheel 18 fixed thereon. The drivewheel 18 is adapted to be connected by a belt to the spindle pulley 16by a belt passing around the loose pulley 19. Mounted on thecountershaft adjacent the drive wheel 18 are a fixed pulley 20 and loosepulley 21 adapted to be connected by a belt to a suitable source ofpower. \Vhen it is desired to put the machine in operation the belt fromthe source of power may be transferred from the loose pulley 21 to thefixed pulley 20 by means of the reciprocating rod 22 having the hooks 23depending therefrom. lVhen it is desired to stop the machine the belt istransferred back on to the loose pulley and a brake may be operated bymeans of the front pedal '24 to quickly reduce the velocity of therotating spindle and basket The parts above described form no part of mypresent invention and are shown merely as a basis for illustrating thedifferent forms of my improved guide or hearing member for the rotarybasket.

Referring to Figs. 2 and 3, a bracket member 25, having the dependingflange 25* and the radially extending flange 25", is shown secured byany suitable means to the inner wall of the shell 10. The inwardlyextending flange 25 serves as a support for a lower supporting ring 26,which is mounted in fixed position concentrically with the basket 15.The lower supporting ring 26 has a lower offset and inwardly extendingflange 26 and has secured thereto by any suitable means the uppersupporting ring or cover plate 27. The lower oflset flange of thesupporting ring 26 and the upper cover plate or supporting ring 27 forma cage for the ball bearings 28, which are adapted to loosely fittherebetween. A hearing ring 29 is suitably mounted on the basket 15inwardly of the ball bearings 28 and said balls are adapted to bemaintained substantially in contact with said bearing ring by means ofan outer retaining ring 30 preferably formed of steel or other hardmaterial. Between the steel ring 30 and the vertical web of thesupporting rin 26 is a layer 31 of rubber or the like which gives alimited resiliency to the construction and permits the basket 15,together with the retaining ring 30, to move bodily in a directiontransversely to the axis of rotation of the basket, thereby permittinglimited vibrations of the rotating parts, such as commonly occur in allelements rotating at high speed, at the same time preventing violentoscillations or vibrations of the basket and spindle, such as are liableto cause injury to the parts of the machine. It will be apparent thatthe parts which form the cage for the ball bearings may be readilydisassembled so that the balls or other parts may be readily replaced incase they become worn or broken.

Referring to the form of my invention illustrated in Figs. 4 to 7,inclusive, the upper supporting ring 35 has a depending flange 35 whichis adapted to be secured by any suitable means to the wall of the shell10 and which also serves as a support for the upwardly extending flangeof the lower supporting ring 36. Suitable ball bearings 37 are mountedbetween the upper and lower supporting rings which form a rage thereforand said bearings are adapted to coact with the bearing ring 29 securedto the wall of the rotary basket as in the previously described form ofmy invention. An outer retaining ring 38 coacts with the balls 37 and isadapted to retain the sannsuhstantially in contact with the bearing ring29. For the purpose of providing a rcsili ency which will permit alimited vibration of the rotating basket. I make use of a phl rality ofleaf springs 39 of the form shown in Fig. 5, these sprlngs being adaptedto be secured at the points 3:) intermediate their endsto the outersurface of the retaining ring 38. The extremities of said springs 39 arecurved inwardly as shown in Fig. 5 and are adapted to contact with andslide upon the inner surface of the shell 10. It will be apparent thatin case a limited vibration of the rotary basket occurs the springs 39will permit a limited lateral movement of the retaining ring 36, whileat the same time maintaining a substantially fixed guide for the rotarybasket and thereby preventin" violent vibrations or oscillationsthereof.

n the preceding forms of my invention I have shown a plurality of ballbearings arranged in close relation to each other extending completelyaround the rotary basket.

In Figs. 8 to 11, inclusive, I have shown another form of my inventionin which the ball bearings are spaced apart about the periphery of thebasket. In this form the lower retaining ring 40 has an upwardlyextending flange 40 secured to the wall of the shell and the uppersupporting ring or cover plate 41 has :1 depending flange 41." adaptedto be secured to the inner side of the flange 40. An outer retainingring 42 is adapted to loosely fit between the supporting rings 40 and 41and retain the ball hearings 43 substantially in contact with thebearing ring 29" carried by the perforated basket. In order to providemeans for spacing the ball bearings apart around the periphery of theba'sket,I make use of an upper retaining and spacing ring 44, which ispro vided with the offset looped portions 44 having the verticallyextending side walls 44, which maintain the ball bearings 43 in properrelative angular position. It will be understood that this upperretaining ring 44 is loosely mounted relatively to the upper supportingring 41 so that it may move bodily, together with the outer retainingring 42, in a direction transversely to the axis of rotation of thebasket. In order to provide a resiliency which will permit a limitedvibration of the rotating parts, I make use, as in the second form ofconstruction, of leaf springs which are secured to the outer surface ofthe outer retaining ring 42 in radial alinement with each of the ballbearings 43. It will be apparent that in this form of construction. asin the other forms, the inner extremities of the upper and lower ringsare spaced slightly from the bearing rrng carned by the rotary basketsothat a lateral vibration of said basket is permisslble, but in each casethe r$ilient mounting of the outer retaining ring, while permitting suchlimited vibration, operates to prevent the violent oscillations.

Referring to Figs. 12 to 15, lnclusxre, I have shown another form of myinventlon in which the bearing are spaced apart around the periphery ofthe rotary basket. In this form of my invention individual bracket orsupporting members are rorided for each or roller. ese brackets haveverti 17 extending webs adapted to be secured to the shell of the extractor and have inwardly extending parts 50 which form supports for therollem 31 of the forms shown particularly m Fig. 14. These rollers 51base parallel end faces and a convex outer surface which is adapted tocoact with the bearing ring 29 carried by the rotary basket. The parts50 of the bracket members 50 are provided with vertically aliningapertures or slots 5:2 which serve as or guides for pins 53 upon whichthe rollers 51 are mounted- The pins 53 are rigidly connected to therollers 51 and are movable with respect to the parts 50" in which theyare mounted, it being apparentthat the slots or apertures 52 areelongated radially from the axis of rotation of the basket. An outerretaining ring 54 contacts with the rollers 51 and serves to maintainthem substantially in contact with the bearing ring 29 and springs 55 ofthe form described in connection with the second and third forms of myinvention are secured to the outer surface of the supporting ring 54 inradial alinement with each of the rollers 51, thus providing theresiliency as set forth in connection with the previous forms of myintention. It will be apparent that when the rotating parts experience aVlibl'aivlllilli the rollers anglmter retam more bodily, insslidinginlheslotsorapettursfii I have above described several differentforms of my inven io each of which is adapted to prevent violentoscillations or vibrations of the basket and other rotating parts of acentrifugal extractor without materially reducing the speed of suchparts while atthesametimefiniifingalimited lateral movement oftheet'owingtosnall vibrations thereof as it rotates at high speed. In caseinfluences arise which tend to produce vibrations and oscillations, theresiliently mounted retaining ring will operate to speedily dampen suchvibrations and restore the machine to normal smooth running conditionswithout furnishing a resistance so rigid as to cause blealrage. It willalso be apparent that in each form of my invention the parts may bereadily disassembled to permit repairs or replacements and it will alsobe obvious that my invention may be readily applied to substantially anyform of centrifugal extractor Without material alteration of the same.

While I have illustrated several particular forms of my invention inconnection with a particular form of centrifugal extractor, it will beevident that my improved guide for bearing for the rotary basket of anextractor may be applied to various different forms of extractors andmay itself partake of various difierent forms of construction withoutdeparting from the spirit of my invention as defined by the appended Iclaim:

1. The combination in a centrifugal extractor of a supporting frame, ashell carried by said frame, a spindle, a basket within said shell andconcentrically mounted on said spindle, a bearing for said spindlecarried by said frame, and an antifriction hearing for said basketcarried by said shell.

'2. In a centrifugal extractor, a frame, a shell carried by said frame,a spindle rotatably mounted in said frame, a basket concentricallylocated Within said shell and mounted on said spindle, and a ballbearing guide for said basket interposed between the mine and saidshell.

In a centrifugll extractor, a frame, a shell carried by said frame, aspindle rotatably mounted in said frame, a basket concentric-allylocated within said shell and mounted on said spindle, a bearing ringcarried by said basket, and antifriction bearings carried by said shellto coact with said bearing ring.

4. In a centrifugal extractor, a frame, a shell carried by said frame, aspindle rotatably mounted in said frame. a basket conccntrirally locatedin said shell and mounted on said spindle, a bearing ring carried bysaid basket, to permit a limited vibration of mid basket.

5. In a centrifugal extractor, a frame, a shell carried by said frame, aspindle rotatably mounted in said frame, a basket concentrically locatedwithin said shell and mounted on said spindle, a bearing ring carried bysaid basket, a cage carried by said shell, and antifriction bearingscarried in said cage to coact with said bearing ring.

6. In a centrifugal extractor, a frame, a

shell carried by said frame, aspindle rotatnbly mounted in said frame, abasket concentrically surrounded by Slld shell and mounted on saidspindle, :1 bearing ring carried by said basket, a cage carried by saidshell, antifriction bearings carried in said cage, and resilientlymounted means to maintain said bearings in Contact with said bearingring.

7. In a centrifugal extractor, a frame comprising a shell, a spindlerotatably mounied in said frame, a be et mounted .on said spindle withinsaid shell, a bracket member carried by said shell, and antiirietionbearings carried by said bracket member to coact with slid basket.

8. In a. centrifugal extnzetor, a frame comprising a shell, :1 spindlerotatably mounted in said frame, a basket mounted on aid windle saidshell, upper and lower supporting members carried by said shell, ballmounted between said supporting members to eoact with said basket, anouter retaining member for said ball bearings mounted between saidsupporting members, and resilient means between said retaining memberand said shell.

9. In a centrifilgal extractor, a frame comprising a shell, :1 spindlerotatably mounted in said frame, a basket mounted on said s indle withinsaid shell, upper and lower supporting members carried by said shell,ball bearings mounted between said supporting members to coact with saidbasket, means to space said ball bearings apartabout the peri hery ofsaid shell, an outer retaining mem r for said ball bearings mountedbetween said supporting mem- Lars, and resilient means between saidretaining member and said shell.

In testimony whereof, I have subscribed STUART A- Eamon.

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Correction in Letters Patent NO. 1,193,697.

shell carried by said fran'ie tably mounted in said .1. an" Icentrically surrounded said shell and mounted on said spindle, a bearingring carried by said basket, a cage carried by said shell, antifrictionbearings carried in said cage, and resiliently mounted means to maintainsaid bearings in contact with said bea ing ring. p

7. In a centrifugal extractor, a frame comprising a shell, a spindlerotatably mounted in saidframe, a basket mounted on said spindle withinsaid shell, a bracket member carried by said shell, and antifrictionbearings carried by saidvbracket member to eoact with said basket.

8. In a centrifugal extractor, a frame comprising a shell, a spindlerotatably mounted in said frame, a basket mounted on said spindle withinsaid shell, upper and lower supporting vmembers carried by said shell,ball bearings mounted between said supporting members to coact with saidspindle rota- [SEAL-l basket con- BEST AVAILABLE COP mounted in saidframe, a basket mounted on said spindle within said shell, upper andlower supporting members carried by said shell, ball bearings mountedbetween said supporting members to coact with said basket, means tospace said ball bearings apart about the periphery of said shell, an

outer retaining member for said ball bearings mounted between saidsupportingmembers, and resilient means between said retainingmember andsaid shell.

In testimony whereof, I have subscribed my name. 1

. AUGUST E. W. J AHN. \Vitnesses:

H. C. LITTLE, STUART A. BARTDN.

' It is hereby certified that in Letters Patent No. 1,193,697, grantedAugust 8, 1916, upon the application of August E. W. Jahn, of New York,N. Y., for an improvement in Centrifugal Extractors, an error appears inthe printed specification requiring correction as follows: Page 3, line120, claim 4, beforethe word to insert the phrase and amifrictionbearings yieldingly carried by sa/td shell dad eagag'ing amid ring; andthat thesaid Letters Patent should be read with this correction thereinthat the samemay conform to the record of the case in the Patent Signedand sealed this 12th day of September, A. D., 1916.

F. W. H. CLAY, Acting C'omiuiomr of Patents.

It is hereby certified that in Letters Patent No. 1,193,697, grantedAugust 8, 1916, upon the application of August E. w. Jahn, of New York,N. Y., for en improvement in Centrifugal Extractor-3; an error appearsin the printed specification re'quiring correction as follows: Page 3,line 120, claim 4, beforethe word to insert the phrase ami am'ifrictionbearings y'ield'ingly carried by said shell and engaging mid ring; andthat the said Letters Patent should be read with this correction thereinthat the same may eonform to the record of the ease in the PatentOfliee.

Signed and sealed this 12th day of September, A. 1)., 1916.

F. W. H. CLAY,

Acting Ummiuioner of Patents.

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